A sealing apparatus includes a carrier and sealant contained by the carrier. An enclosure interface includes first and second pieces and defines one or more sealing channels that the sealing apparatus may be positioned within. The first piece defines an opening that has a perimeter sealed by the sealing apparatus. When the first and second pieces are mounted together, the sealant forms a first interface seal with the first piece and a second interface seal with the second piece. The one or more sealing channels are interconnected by one or more junction sections that include a volume of sealant. The carrier may define first and second channels that respectively contain first and second volumes of sealant. The method for making the sealing apparatus may include extruding the first and second volumes of sealant into the first and second channels.
|
25. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier including a first seal-access side and a second seal-access side, the first and the second seal-access sides facing in different directions; and
sealant material carried by the carrier, the sealant material being accessible from the first seal-access side and the second seal-access side of the carrier, the sealant material being elongated along the carrier axis;
wherein the carrier further includes a cover structure that at least partially covers the first seal-access side, the cover structure including a pair of resilient flaps each having base ends attached to the carrier, the resilient flaps being adapted to prevent contaminates from entering the sealant material.
28. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier defining a first carrier channel that is elongated along the carrier axis and that has a first seal-access side, the carrier also defining a second carrier channel that is elongated along the carrier axis and that has a second seal-access side, the first and the second seal-access sides facing in different directions;
a first volume of sealant material being entirely contained within the first carrier channel, the first volume of sealant material being accessible from the first seal-access side of the first carrier channel, the first volume of sealant material being elongated along the carrier axis; and
a second volume of sealant material being entirely contained within the second carrier channel, the second volume of sealant material being accessible from the second seal-access side of the second carrier channel, and the second volume of sealant material being elongated along the carrier axis;
wherein the carrier further includes a cover structure that at least partially covers the first seal-access side of the first carrier channel, the cover structure including a pair of resilient flaps each having base ends attached to the carrier.
27. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier defining a first carrier channel that is elongated along the carrier axis and that has a first seal-access side, the carrier also defining a second carrier channel that is elongated along the carrier axis and that has a second seal-access side, the first and the second seal-access sides facing in different directions;
a first volume of sealant material being entirely contained within the first carrier channel, the first volume of sealant material being accessible from the first seal-access side of the first carrier channel, the first volume of sealant material being elongated along the carrier axis; and
a second volume of sealant material being entirely contained within the second carrier channel, the second volume of sealant material being accessible from the second seal-access side of the second carrier channel, and the second volume of sealant material being elongated along the carrier axis;
wherein the carrier further includes a cover structure that at least partially covers the first seal-access side of the first carrier channel, the cover structure including a pair of resilient flaps each having base ends attached to the carrier, the resilient flaps being adapted to prevent contaminates from entering the first and second volume of sealant materials.
12. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier defining a first carrier channel that is elongated along the carrier axis and that has a first seal-access side, the carrier also defining a second carrier channel that is elongated along the carrier axis and that has a second seal-access side, the first and the second seal-access sides facing in different directions, the carrier has a height extending from the first seal-access side in a direction toward the second seal-access side and a width perpendicular to the height, wherein the height is larger than the width;
a first volume of sealant material being entirely contained within the first carrier channel, the first volume of sealant material being accessible from the first seal-access side of the first carrier channel, the first volume of sealant material being elongated along the carrier axis; and
a second volume of sealant material being entirely contained within the second carrier channel, the second volume of sealant material being accessible from the second seal-access side of the second carrier channel, and the second volume of sealant material being elongated along the carrier axis;
wherein the carrier includes a cover structure that at least partially covers the first seal-access side of the first carrier channel; and
wherein the cover structure includes at least one resilient flap.
26. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier including a first seal-access side and a second seal-access side, the first and the second seal-access sides facing in different directions; and
sealant material carried by the carrier, the sealant material being accessible from the first seal-access side and the second seal-access side of the carrier, the sealant material being elongated along the carrier axis
an enclosure interface comprising:
a first housing piece and a second housing piece that meet at an interface, at least one of the first and the second housing pieces defining an enclosure sealing channel that extends along the interface; and
the sealing apparatus positioned at least partially within the enclosure sealing channel;
wherein when the first and the second housing pieces are mounted together so as to meet at the interface, the sealant material forms a first interface seal at the first seal-access side with the first housing piece and the sealant material also forms a second interface seal at the second seal-access side with the second housing piece; and
wherein the carrier further includes a cover structure that at least partially covers the first seal-access side and wherein the first housing piece includes an integral sealing projection that penetrates the cover structure and embeds in the sealant material to form the first interface seal.
1. An enclosure interface including a sealing apparatus, the enclosure interface comprising:
a first housing piece and a second housing piece that meet at an interface, at least one of the first and the second housing pieces defining an enclosure sealing channel that extends along the interface; and the sealing apparatus positioned at least partially within the enclosure sealing channel; the sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier including a first seal-access side and a second seal-access side, the first and the second seal-access sides facing in different directions, the carrier has a height extending from the first seal-access side in a direction toward the second seal-access side and a width perpendicular to the height, wherein the height is larger than the width; and
sealant material carried by the carrier, the sealant material being accessible from the first seal-access side and the second seal-access side of the carrier, the sealant material being elongated along the carrier axis, and the entirety of the sealant material being recessed relative to the first and second seal-access sides of the carrier;
wherein when the first and the second housing pieces are mounted together so as to meet at the interface, the sealant material forms a first interface seal at the first seal-access side with the first housing piece and the sealant material also forms a second interface seal at the second seal-access side with the second housing piece.
31. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier including a first seal-access side and a second seal-access side, the first and the second seal-access sides facing in different directions, the carrier has a height that extends between the first and second seal-access sides and a width perpendicular to the height, wherein the height is larger than the width; and
sealant material carried by the carrier, the sealant material being accessible from the first seal-access side and the second seal-access side of the carrier, the sealant material being elongated along the carrier axis, and the sealant material being recessed relative to the first and second seal-access sides of the carrier;
an enclosure interface comprising:
a first housing piece and a second housing piece that meet at an interface, at least one of the first and the second housing pieces defining an enclosure sealing channel that extends along the interface; and
the sealing apparatus positioned at least partially within the enclosure sealing channel;
wherein when the first and the second housing pieces are mounted together so as to meet at the interface, the sealant material forms a first interface seal at the first seal-access side with the first housing piece and the sealant material also forms a second interface seal at the second seal-access side with the second housing piece;
the carrier further including a cover structure that at least partially covers the first seal-access side and wherein the first housing piece includes an integral sealing projection that penetrates the cover structure and embeds in the sealant material to form the first interface seal.
29. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier defining a first carrier channel that is elongated along the carrier axis and that has a first seal-access side, the carrier also defining a second carrier channel that is elongated along the carrier axis and that has a second seal-access side, the first and the second seal-access sides facing in different directions;
a first volume of sealant material contained within the first carrier channel, the first volume of sealant material being accessible from the first seal-access side of the first carrier channel, the first volume of sealant material being elongated along the carrier axis; and
a second volume of sealant material contained within the second carrier channel, the second volume of sealant material being accessible from the second seal-access side of the second carrier channel, and the second volume of sealant material being elongated along the carrier axis;
wherein the carrier includes a cover structure that at least partially covers the first seal-access side of the first carrier channel;
wherein the cover structure includes at least one resilient flap; and
wherein the cover structure includes first and second resilient flaps moveable from a closed position to an open position, each of the first and the second resilient flaps having a base end integral with a main body of the carrier, each of the first and the second resilient flaps having a free end, the free ends of the first and the second resilient flaps opposing one another when the cover structure is in a closed position, and the first and the second resilient flaps flexing away from one another and toward the first volume of sealant material about their base ends when the first and the second resilient flaps are moved from the closed position of the resilient flaps toward the open position of the resilient flaps.
30. A sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier defining a first carrier channel that is elongated along the carrier axis and that has a first seal-access side, the carrier also defining a second carrier channel that is elongated along the carrier axis and that has a second seal-access side, the first and the second seal-access sides facing in different directions, the carrier has a height that extends between the first and second seal-access sides and a width perpendicular to the height, wherein the height is larger than the width;
a first volume of sealant material contained within the first carrier channel, the first volume of sealant material being accessible from the first seal-access side of the first carrier channel, the first volume of sealant material being elongated along the carrier axis; and
a second volume of sealant material contained within the second carrier channel, the second volume of sealant material being accessible from the second seal-access side of the second carrier channel, and the second volume of sealant material being elongated along the carrier axis;
wherein the carrier includes a cover structure that at least partially covers the first seal-access side of the first carrier channel, the cover structure including first and second resilient flaps moveable from a closed position to an open position, each of the first and the second resilient flaps having a base end integral with a main body of the carrier, each of the first and the second resilient flaps having a free end, the free ends of the first and the second resilient flaps opposing one another when the cover structure is in a closed position, and the first and the second resilient flaps flexing away from one another and toward the first volume of sealant material about their base ends when the first and the second resilient flaps are moved from the closed position of the resilient flaps toward the open position of the resilient flaps.
32. An enclosure including a sealing apparatus, the enclosure comprising:
a housing including a first housing piece and a second housing piece, the first housing piece defining an opening having a perimeter, the first and the second housing pieces mounting together to cover the opening, the housing defining an enclosure channel that extends around the perimeter of the opening, the enclosure channel including at least one primary channel section interconnected by at least one junction section; the sealing apparatus comprising:
a carrier that is elongated along a carrier axis, the carrier including a first seal-access side and a second seal-access side, the first and the second seal-access sides facing in different directions, the carrier has a height extending from the first seal-access side in a direction toward the second seal-access side and a width perpendicular to the height, wherein the height is larger than the width; and
sealant material carried by the carrier, the sealant material being accessible from the first seal-access side and the second seal-access side of the carrier, the sealant material being elongated along the carrier axis, and the entirety of the sealant material being recessed relative to the first and second seal-access sides of the carrier;
the sealing apparatus positioned at least partially within the enclosure channel for forming a seal between the first and the second housing pieces around the perimeter of the opening, the carrier of the sealing apparatus being positioned in the at least one primary channel section, the sealant material of the sealing apparatus being a first volume of sealant material; and
at least one second volume of sealant material positioned within the at least one junction section of the enclosure channel, the second volume of sealant material being in communication with the first volume of sealant material, wherein when the first and the second housing pieces are mounted together the first and the second volumes of sealant material form a first seal with the first housing piece that extends continuously around the perimeter of the opening, and the first and the second volumes of sealant material form a second seal with the second housing piece that extends continuously around the perimeter of the opening.
2. The enclosure interface of
3. The enclosure interface of
4. The enclosure interface of
5. The enclosure interface of
6. The enclosure interface of
7. The enclosure interface of
8. The enclosure interface of
9. The enclosure interface of
10. The enclosure interface of
11. The enclosure interface of
14. The sealing apparatus of
15. The sealing apparatus of
16. The sealing apparatus of
17. The sealing apparatus of
18. The sealing apparatus of
19. The sealing apparatus of
20. The sealing apparatus of
21. The sealing apparatus of
22. The sealing apparatus of
23. The sealing apparatus of
24. The sealing apparatus of
33. The enclosure of
34. The enclosure of
|
The present application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/622,321, filed Apr. 10, 2012, which application is hereby incorporated by reference in its entirety.
Telecommunications networks often use enclosures for containing and protecting telecommunications equipment (e.g., splice locations, splitters, multi-plexers, connection panels, etc.). Enclosures used in outside environments are desirably sealed to prevent moisture intrusion. Gel seals have worked extremely well for providing perimeter seals between bases and covers of enclosures and for providing seals at any other type of interface between housing pieces of an enclosure. An example gel sealed enclosure is disclosed at U.S. Pat. No. 7,603,018, which is hereby incorporated by reference in its entirety.
In such gel seals, gels are typically contained within a channel defined by either the base or the cover of the enclosure. The gels are installed in the channels by injection molding processes. Such processes involve mating the piece of the enclosure defining the channel to a matching injection mold piece such that the two pieces cooperate to define an injection cavity. The gel is then injected into the cavity and assumes the shape of the cavity. A problem with this type of process is that every time a new enclosure is designed or an existing enclosure is changed, a corresponding new injection mold also needs to be made. This increases cost and can lengthen the time required to introduce a new enclosure design. Also, due to issues relating to post-injection gel shrinkage, gel height-to-width ratios that can be achieved using injection molding processes are limited.
One aspect of the present disclosure relates to a sealing apparatus including a carrier and sealant material. The carrier is elongated along a carrier axis and includes a first seal-access side and a second seal-access side. The first and the second seal-access sides face in different directions. The sealant material is carried by the carrier and is accessible from the first seal-access side and the second seal-access side of the carrier. The sealant material is elongated along the carrier axis.
Another aspect of the present disclosure relates to an enclosure interface that includes the sealing apparatus of the preceding paragraph. The enclosure interface includes a first housing piece and a second housing piece that meet at an interface. At least one of the first and the second housing pieces define an enclosure sealing channel that extends along the interface. The sealing apparatus is positioned at least partially within the enclosure sealing channel. When the first and the second housing pieces are mounted together, so as to meet at the interface, the sealant material forms a first interface seal at the first seal-access side with the first housing piece and also forms a second interface seal at the second seal-access side with the second housing piece. The first housing piece may include a first integral sealing projection that embeds in the sealant material to form the first interface seal, and/or the second housing piece may include a second integral sealing projection that embeds in the sealant material to form the second interface seal.
Yet another aspect of the present disclosure relates to an enclosure that includes the above sealing apparatus and a housing. The housing includes a first housing piece and a second housing piece. The first housing piece defines an opening having a perimeter. The first and the second housing pieces mount together to cover the opening. The housing defines an enclosure channel that extends around the perimeter of the opening. The enclosure channel includes at least one primary channel section that is interconnected by at least one junction section. The sealing apparatus is positioned at least partially within the enclosure channel and thereby forms a seal between the first and the second housing pieces along the perimeter of the opening. The carrier of the sealing apparatus is positioned in the at least one primary channel section. The sealant material of the sealing apparatus is a first volume of sealant material. At least one second volume of sealant material is positioned within the at least one junction section of the enclosure channel. The second volume of sealant material is in communication with the first volume of sealant material. When the first and the second housing pieces are mounted together, the first and the second volumes of sealant material form a first seal with the first housing piece that extends continuously around the perimeter of the opening and form a second seal with the second housing piece that extends continuously around the perimeter of the opening.
Still another aspect of the present disclosure relates to a method for installing the sealing apparatus within the above enclosure channel. The method includes positioning at least one of the carriers within the at least one primary channel sections of the enclosure channel and afterwards injecting the at least one second volume of sealant material into the at least one junction section of the enclosure channel. The first volume of sealant material may be pre-installed within the at least one carrier prior to the positioning of the at least one carrier within the at least one primary channel section.
Another aspect of the present disclosure relates to a sealing apparatus including a carrier, a first volume of sealant material, and a second volume of sealant material. The carrier is elongated along a carrier axis. The carrier defines a first carrier channel that is elongated along the carrier axis. The first carrier channel has a first seal-access side. The carrier also defines a second carrier channel that is elongated along the carrier axis. The second carrier channel has a second seal-access side. The first and the second seal-access sides face in different directions. The first volume of sealant material is contained within the first carrier channel. The first volume of sealant material is accessible from the first seal-access side of the first carrier channel. The first volume of sealant material is elongated along the carrier axis. The second volume of sealant material is contained within the second carrier channel. The second volume of sealant material is accessible from the second seal-access side of the second carrier channel. The second volume of sealant material is elongated along the carrier axis. A method for making the sealing apparatus includes extruding the carrier and extruding the first and the second volumes of sealant material into the first and the second carrier channels.
Yet another aspect of the present disclosure relates to an enclosure interface including a first housing piece and a second housing piece that meet at an interface. At least one of the first and the second housing pieces defines an enclosure sealing channel that extends along the interface. A sealing apparatus is positioned within the enclosure sealing channel. The sealing apparatus includes a carrier that defines first and second elongate carrier channels that are elongated along the enclosure sealing channel. The sealing apparatus also includes a first volume of sealant material positioned within the first elongate carrier channel, and a second volume of sealant material positioned within the second elongate carrier channel. When the first and the second housing pieces are mounted together, so as to meet at the interface, the first volume of sealant material forms a first interface seal with the first housing piece and the second volume of sealant material forms a second interface seal with the second housing piece.
Still another aspect of the present disclosure relates to an enclosure including a housing and a sealing arrangement. The housing includes a first housing piece and a second housing piece. The first housing piece defines an opening that has a perimeter. The first and the second housing pieces mount together to cover the opening. The housing defines a first enclosure channel that extends around the perimeter of the opening. The first enclosure channel includes at least one primary channel section that is interconnected to at least one junction section. The sealing arrangement is positioned within the first enclosure channel for forming a seal between the first and the second housing pieces along the perimeter of the opening. The sealing arrangement includes at least one carrier section that defines first and second elongate carrier channels. The at least one carrier section is positioned in the at least one primary channel section. The sealing arrangement also includes at least one first volume of sealant material positioned within the first elongate carrier channel and at least one second volume of sealant material positioned within the second elongate carrier channel. The sealing arrangement further includes at least one third volume of sealant material that is positioned within the at least one junction section of the first enclosure channel. The third volume of sealant material is in communication with the first and the second volumes of sealant material. When the first and the second housing pieces are mounted together, the first and the third volumes of sealant material form a first seal with the first housing piece that extends continuously around the perimeter of the opening. When the first and the second housing pieces are mounted together, the second and the third volumes of sealant material form a second seal with the second housing piece that extends continuously around the perimeter of the opening.
Reference will now be made in detail to the exemplary aspects of the present disclosure that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like structure. When like structure is included on different embodiments, a prime (′) or double prime (″) may be appended to the same reference number to indicate the like structure on a different embodiment.
According to the principles of the present disclosure, a sealing arrangement that may be used to seal joints of an enclosure includes an elongated carrier and a sealant material held within the elongated carrier. Such enclosures may be used to house telecommunication components. Such joints, for example, may be positioned between a first piece and a second piece of the enclosure. The first piece, for example, may be a base of the enclosure, and the second piece may be a cover of the enclosure. The elongated carrier may be extruded. The sealant material may be a gel.
Turning now to
In the depicted embodiment, the first elongate carrier channel 530 and the second elongate carrier channel 550 are included on a carrier 510. The carrier 510 may be a common carrier for both the first elongate carrier channel 530 and the second elongate carrier channel 550. The carrier 510 may be a sealant holder. The carrier 510 may be a sealant containment structure. The carrier 510 may form a carrier section of the sealing arrangement 500. The carrier 510 may extend from a first end 512 to a second end 514. The carrier 510 may include a main body 516. The main body 516 may have a generally H-shaped transverse cross-sectional profile. The generally H-shaped transverse cross-sectional profile may be defined by the carrier 510 when cut along a cross-sectional plane that is perpendicular to a carrier axis Ac. The transverse cross-sectional profile may be defined by a base wall 520 that defines closed ends 518 of the first elongate carrier channel 530 and the second elongate carrier channel 550. As illustrated at
The first elongate carrier channel 530 may further include a first opposing side wall 522a and a second opposing side wall 522b that oppose each other and form a first set of opposing side walls. The second elongate carrier channel 550 may include a first side wall 524a and a second side wall 524b that oppose each other and form a second set of opposing side walls. The base wall 520 may include a first side 526c and a second side 528c. As depicted, the first opposing side wall 522a includes an inside surface 526a, and the second opposing side wall 522b includes an inside surface 526b. The inside surface 526a, the inside surface 526b, and the first side 526c of the base wall 520 define the first elongate carrier channel 530. The first side wall 524a includes an inside surface 528a, and the second side wall 524b includes an inside surface 528b. The inside surface 528a, the inside surface 528b, and the second side 528c of the base wall 520 define the second elongate carrier channel 550. In the depicted embodiment, the first elongate carrier channel 530 and the second elongate carrier channel 550 include three of the inside surfaces. In other embodiments, the first elongate carrier channel 530 and the second elongate carrier channel 550 may include more than three inside surfaces or fewer than three inside surfaces. In the depicted embodiment, the inside surfaces 526a-c and 528a-c are generally straight. In other embodiments, the inside surfaces of the first elongate carrier channel 530 and the second elongate carrier channel 550 may be curved. In other embodiments, the first elongate carrier channel 530 and/or the second elongate carrier channel 550 may include a single curved inside surface. As shown at
As depicted at
Turning now to
In the depicted embodiment, the extrusion machine 800 includes a carrier extruder 810. The carrier extruder 810 includes an inlet 812 and an outlet 814. At the inlet 812, raw material (e.g., plastic granulate) is fed into the carrier extruder 810. For example, as depicted a hopper 816 may be filled with the raw material for the carrier 510. The hopper 816 may allow gravity to feed the raw material into the inlet 812. The carrier extruder 810 may include heaters, grinders, masticators, an extrusion dye, and other components typically found in extruders. The carrier extruder 810 receives the raw material at the inlet 812, processes the raw material into the carrier 510, and forces the carrier 510 out of the outlet 814.
The extrusion machine 800 may further include a material feeder 820. The material feeder 820 may pull on the carrier 510 and thereby assists in the carrier 510 exiting the carrier extruder 810. The assistance provided by the material feeder 820 may be significant, and the carrier 510 may be a pultrusion. The carrier 510 generally exits the carrier extruder 810 along the carrier axis Ac. The material feeder 820 generally moves the carrier 510 in a direction along the carrier axis Ac.
The extrusion machine 800 may include a sealant extruder 830 (e.g., a gel extruder). The sealant extruder 830 includes a carrier inlet 832 and a sealant inlet 834 (e.g., a gel inlet). The sealant extruder 830 further includes an outlet 836. The carrier 510 is fed into the carrier inlet 832. The sealant material 570 is fed into the sealant inlet 834. In the example embodiment, a tank 838 is connected to the sealant inlet 834. The tank 838 may be filled with the sealant material 570. The tank 838 may be pressurized and/or may include a pump and thereby drive the sealant material 570 into the sealant inlet 834. Within the sealant extruder 830, the first volume 570a of the sealant material 570 is placed within the first elongate carrier channel 530, and the second volume 570b of the sealant material 570 is placed within the second elongate carrier channel 550. Upon the sealant material 570 being extruded into the carrier 510, the sealing arrangement 500 is formed. Thereafter, the sealing arrangement 500 exits the outlet 836.
In certain embodiments, the base wall 520 is replaced with a structure that allows passage between the first elongate carrier channel 530 and the second elongate carrier channel 550. In other embodiments, passages are added to the base wall 520 that allow passage between the first elongate carrier channel 530 and the second elongate carrier channel 550.
In certain embodiments, the sealant extruder 830 extrudes a single volume 570′ of the sealant material 570 into a carrier 510″, without the base wall 520, as illustrated at
In the depicted embodiment, the sealing arrangement 500, 500′, 500″ may be flexible and may thereby be wound (i.e., wrapped, rolled, etc.) on a reel 840. In particular, the reel 840 may include a hub 842 that spins about a spool axis As. The hub 842 may define a radius r. The sealing arrangement 500, 500′, 500″ may be wrapped about the radius r of the hub 842 as the reel 840 spins about the spool axis As. The sealing arrangement 500, 500′, 500″ may be wrapped directly upon the radius r, and/or the sealing arrangement 500, 500′, 500″ may be wrapped multiple layers deep about the hub 842. The sealing arrangement 500, 500′, 500″ may flex as it is wrapped about the hub 842. The sealing arrangement 500, 500′, 500″ may flex about a section axis. The section axis may be oriented about a variety of orientations of the carrier 510, 510′, 510″. For example, the section axis may be parallel to the base wall 520. In other embodiments, the section axis may be perpendicular to the base wall 520.
It will be appreciated that the sealant material 570 (i.e., sealants) of the present disclosure may be formed of any one or more of a variety of sealing materials. Elastomers, including natural or synthetic rubbers (e.g., EPDM rubber or silicone rubber) can be used. In further embodiments, the sealant material can be a gasket (e.g., a rubber gasket or other type of elastomeric gasket). In other embodiments, polymeric foam (e.g., open cell or closed cell) such as silicone foam can be used. In other embodiments, mastics can be used. In still other embodiments, the sealing members 570a, 570b, 570′ may comprise gel and/or gel combined with another material such as an elastomer. The gel may, for example, comprise silicone gel, urea gel, urethane gel, thermoplastic gel, or any suitable gel or geloid sealing material. Gels are normally substantially volumetrically incompressible (i.e., the gels behave similar to a liquid and experience little to no reduction in volume when placed under pressure); when placed under a compressive force and normally flow and conform to their surroundings thereby forming sealed contact with other surfaces. Example gels include oil-extended polymers. The polymer may, for example, comprise an elastomer, or a block copolymer having relatively hard blocks and relatively elastomeric blocks. Example copolymers include styrene-butadiene or styrene-isoprene di-block or tri-block copolymers. In still other embodiments, the polymer of the gel may include one or more styrene-ethylene-propylene-styrene block copolymers. Example extender oils used in example gels may, for example, be hydrocarbon oils (e.g., paraffinic or naphthenic oils or polypropene oils, or mixtures thereof).
The sealants can also include additives such as moisture scavengers, antioxidants, tackifiers, pigments and/or fungicides. In certain embodiments, sealants 570 in accordance with the principles of the present disclosure have ultimate elongations greater than 100 percent with substantially elastic deformation to an elongation of at least 100 percent. In other embodiments, sealants 570 in accordance with the principles of the present disclosure have ultimate elongations of at least 200 percent, or at least 500 percent, or at least 1,000 percent. Ultimate elongation can be determined by the testing protocol set forth at ASTM D412.
The sealants 570a, 570b, 570′ may be any suitable sealants. According to some embodiments, the sealant 570a, 570′ is a gel sealant. According to some embodiments, the sealant 570b is a gel sealant. According to some embodiments, both of the sealants 570a, 570b are gel sealants. As used herein, “gel” refers to the category of materials which are solids extended by a fluid extender. The gel may be a substantially dilute system that exhibits no steady state flow. As discussed in Ferry, “Viscoelastic Properties of Polymers,” third ed. P. 529 (J. Wiley & Sons, New York 1980), a polymer gel may be a cross-linked solution whether linked by chemical bonds or crystallites or some other kind of junction. The absence of the steady state flow may be considered to be the definition of the solid-like properties while the substantial dilution may be necessary to give the relatively low modulus of gels. The solid nature may be achieved by a continuous network structure formed in the material generally through crosslinking the polymer chains through some kind of junction or the creation of domains of associated substituents of various branch chains of the polymer. The crosslinking can be either physical or chemical as long as the crosslink sites may be sustained at the use conditions of the gel.
Gels for use in this disclosure may be silicone (organopolysiloxane) gels, such as the fluid-extended systems taught at U.S. Pat. No. 4,634,207 to Debbaut (hereinafter “Debbaut '207”); U.S. Pat. No. 4,680,233 to Camin et al.; U.S. Pat. No. 4,777,063 to Dubrow et al.; and U.S. Pat. No. 5,079,300 to Dubrow et al. (hereinafter “Dubrow '300”), the disclosures of each of which are hereby incorporated herein by reference in their entirety. These fluid-extended silicone gels may be created with nonreactive fluid extenders as in the previously recited patents or with an excess of a reactive liquid, e.g., a vinyl-rich silicone fluid, such that it acts like an extender, as exemplified by the Sylgarde 200 product commercially available from Dow-Corning of Midland, Mich. or as disclosed at U.S. Pat. No. 3,020,260 to Nelson. Because curing is generally involved in the preparation of these gels, they are sometimes referred to as thermosetting gels. The gel may be a silicone gel produced from a mixture of divinyl terminated polydimethylsiloxane, tetrakis (dimethylsiloxy)silane, a platinum divinyltetramethyldisiloxane complex, commercially available from United Chemical Technologies, Inc. of Bristol, Pa., polydimethylsiloxane, and/or 1,3,5,7-tetravinyltetra-methylcyclotetrasiloxane (reaction inhibitor for providing adequate pot life).
Other types of gels may be used, for example, polyurethane gels as taught in the aforementioned Debbaut '261 and U.S. Pat. No. 5,140,476 to Debbaut (hereinafter “Debbaut '476”) and gels based on styrene-ethylene butylenestyrene (SEBS) or styrene-ethylene propylene-styrene (SEPSS) extended with an extender oil of naphthenic or nonaromatic or low aramatic content hydrocarbon oil, as described in U.S. Pat. No. 4,369,284 to Chen; U.S. Pat. No. 4,716,183 to Gamarra et al.; and U.S. Pat. No. 4,942,270 to Gamarra. The SEBS and SEPS gels comprise glassy styrenic microphases interconnected by a fluid-extended elastomeric phase. The microphase-separated styrenic domains serve as the junction points in the systems. The SEBS and SEPS gels are examples of thermoplastic systems.
Another class of gels which may be used are EPDM rubber-based gels, as described in U.S. Pat. No. 5,177,143 to Chang et al.
Yet another class of gels which may be used is based on anhydride-containing polymers, as disclosed in WO 96/23007. These gels reportedly have good thermal resistance.
The gel may include a variety of additives, including stabilizers and antioxidants such as hindered phenols (e.g., Irganox™ 1076, commercially available from Ciba-Geigy Corp. of Tarrytown, N.Y.), phosphites (e.g., Irgafos™ 168, commercially available from Ciba-Geigy Corp. of Tarrytown, N.Y.), metal deactivators (e.g., Irganox™ D1024 from Ciba-Geigy Corp. of Tarrytown, N.Y.), and/or sulfides (e.g., Cyanox LTDP, commercially available from American Cyanamid Co. of Wayne, N.J.), light stabilizers (e.g., Cyasorb UV-531, commercially available from American Cyanamid Co. of Wayne, N.J.), and/or flame retardants such as halogenated paraffins (e.g., Bromoklor 50, commercially available from Ferro Corp. of Hammond, Ind.), and/or phosphorous containing organic compounds (e.g., Fyrol PCF and Phosflex 390, both commercially available from Akzo Nobel Chemicals Inc. of Dobbs Ferry, N.Y.) and/or acid scavengers (e.g., DHT-4A, commercially available from Kyowa Chemical Industry Co. Ltd through Mitsui & Co. of Cleveland, Ohio, and hydrotalcite). Other suitable additives include colorants, biocides, tackifiers and the like described in “Additives for Plastics, Edition 1” published by D.A.T.A., Inc. and The International Plastics Selector, Inc., San Diego, Calif.
The hardness, stress relaxation, and tack may be measured using a Texture Technologies Texture Analyzer TA-XT2 commercially available from Texture Technologies Corp. of Scarsdale, N.Y., or like machines, having a five kilogram load cell to measure force, a 5 gram trigger, and ¼ inch (6.35 mm) stainless steel ball probe as described in Dubrow '300, the disclosure of which is incorporated herein by reference in its entirety. For example, for measuring the hardness of a gel a 60 mL glass vial with about 20 grams of gel, or alternately a stack of nine 2 inch×2 inch×⅛″ thick slabs of gel, is placed in the Texture Technologies Texture Analyzer and the probe is forced into the gel at the speed of 0.2 millimeter/second to a penetration distance of 4.0 millimeter. The hardness of the gel is indicated by the force in grams, as recorded by a computer, required to force the probe at that speed to penetrate or deform the surface of the gel specified for 4.0 mm. Higher numbers signify harder gels. The data from the Texture Analyzer TA-XT2 may be analyzed on an IBM PC or like computer, running Microsystems Ltd, XT.RA Dimension Version 2.3 software.
The tack and stress relaxation are read from the stress curve generated when the XT.RA Dimension version 2.3 software automatically traces the force versus time curve experienced by the load cell when the penetration speed is 2.0 mm/second and the probe is forced into the gel a penetration distance of about 4.0 mm. The probe is held at 4.0 mm penetration for 1 minute and withdrawn at a speed of 2.00 millimeters/second. The stress relaxation is the ratio of the initial force (Fi) resisting the probe at the pre-set penetration depth minus the force resisting the probe (Ff) after 1 minute divided by the initial force Fi, expressed as a percentage. That is, percent stress relaxation is equal to ((Fi−Ff)/Fi)×100% where Fi and Ff are in grams. In other words, the stress relaxation is the ratio of the initial force minus the force after 1 minute over the initial force. It may be considered to be a measure of the ability of the gel to relax any induced compression placed on the gel. The tack may be considered to be the amount of force in grams resistance on the probe as it is pulled out of the gel when the probe is withdrawn at a speed of 2.0 millimeters/second from the preset penetration depth.
An alternative way to characterize the gels is by cone penetration parameters according to ASTM D-217 as proposed in Debbaut '261; Debbaut '207; Debbaut '746; and U.S. Pat. No. 5,357,057 to Debbaut et al., each of which is incorporated herein by reference in its entirety. Cone penetration (“CP”) values may range from about 70 (10−1 millimeter) to about 400 (10−1 millimeter). Harder gels may generally have CP values from about 70 (10−1 millimeter) to about 120 (10−1 millimeter). Softer gels may generally have CP values from about 200 (10−1 millimeter) to about 400 (10−1 millimeter), with particularly preferred range of from about 250 (10−1 millimeter) to about 375 (10−1 millimeter). For a particular materials system, a relationship between CP and Voland gram hardness can be developed as proposed in U.S. Pat. No. 4,852,646 to Dittmer et al.
According to some embodiments, the gel has a Voland hardness, as measured by a texture analyzer, of between about 5 and 100 grams force. The gel may have an elongation, as measured by ASTM D-638, of at least 55%. According to some embodiments, the elongation is at least 100%. The gel may have a stress relaxation of less than 80%. The gel may have a tack greater than about 1 gram. Suitable gel materials include POWERGEL sealant gel available from Tyco Electronics Energy Division of Fuquay-Varina, North Carolina under the RAYCHEM brand.
While, in accordance with some embodiments, the sealants 570a, 570b, 570′ are gels as described above, other types of sealants may be employed. For example, the sealants 570a, 570b, 570′ may be silicone grease and/or hydrocarbon-based grease.
The sealant 570a (i.e., the first volume 570a) may have different physical properties and/or different chemical formulations than the sealant 570b (i.e., the second volume 570b). In particular, properties such as elongation properties, tackiness properties, flowability properties, material compatibility properties, etc. may be different and distinct between the first volume 570a and the second volume 570b.
The sealant 570′ may have different physical properties and/or different chemical formulations arranged along a gradient. In particular, properties such as elongation properties, tackiness properties, flowability properties, material compatibility properties, etc. may be different and distinct between different portions of the sealant 570′.
The sealant material 570 may be substantially volumetrically incompressible. By being substantially volumetrically incompressible, the sealant material 570 exhibits hydraulic characteristics similar to or the same as a liquid when placed under pressure.
Turning now to
In the depicted embodiment the first housing piece 120 includes an opening 130 that defines a perimeter 132 (see
In the depicted embodiment, a sealing projection 122 runs along the perimeter 132. In particular, the sealing projection 122 is positioned within the channels 134. As depicted, the sealing projection 122 extends toward the second housing piece 140 when the second housing piece 140 is positioned on the first housing piece 120. As depicted, the first housing piece 120 includes a first sealing projection 122a positioned within the first channel 134a, a second sealing projection 122b positioned within the second channel 134b, a third sealing projection 122c positioned within the third channel 134c, and a fourth sealing projection 122d positioned within the fourth channel 134d. As depicted, the sealing projections 122a-d intersect with each other at the corners 138 to form a continuous, uninterrupted structure that extends along the perimeter. The sealing projections 122, 122a-d may be or may include a sealing blade or a fin, etc. The sealing projections 122, 122a-d may be relatively thin. For example, a ratio of height to thickness may be greater than 2:1, greater than 3:1, or greater than 4:1.
In the depicted embodiment, a sealing projection 142 of the second housing piece 140 also runs along the perimeter 132 when the first housing piece 120 and the second housing piece 140 are assembled (see
As depicted at
According to the principles of the present disclosure, a seal 406 is provided between the ends 502, 504 of the sealing apparatuses 500 (e.g., 500a, 500b, 500c, and 500d). As illustrated at
Turning now to
As illustrated at
The injection mold 700 may include an inlet 710, a vent 712, a flange mount 714, a seal interface 716, a carrier interface 718, a sealant interface 720 (e.g., a gel interface), and a clamp 722. The injection mold 700 is generally positioned over the junction 136, 136a-d and secured to the first housing piece 120. As illustrated, the injection mold 700 is secured to the flange 146 by one or more of the clamps 722 (see
The injection mold 700 can be made to be standardized and thereby fit a variety of enclosures such as the enclosure 100. The variety of the enclosures can include a variety of shapes and sizes, but yet be compatible with the injection mold 700. The variety of the enclosures may further be compatible with the sealing apparatuses 500, cut at various lengths. As the variety of the enclosures may be accommodated and sealed by the sealing apparatuses 500 and the sealant material 570c injected by the injection mold 700, additional molds are not required thus saving time and expense of developing and building custom molds to custom fit the various enclosures.
In the preceding embodiment of
According to the principles of the present disclosure, additional features are illustrated at an embodiment illustrated at
The sealing apparatuses 500′ may be generally similar to the sealing apparatus 500. As depicted, the sealing apparatus 500′ further includes a retaining tab 532 with a lead-in 534 and a retaining tab 552 with a pivot surface 554. The sealing apparatus 500′ may further include the cover structure 580.
The cover structure 580 is illustrated at a closed position 582 at
The retainer 600 includes a first end 602, a second end 604, a first edge 606, a second edge 608, and a retaining member 610 or members 610 (e.g., a barb or barbs). The retainer 600 may be used to retain the sealing apparatuses 500′ within the channels 134″.
The sequence of figures between
As illustrated at
Upon the sealing apparatus 500 being installed into its final position within the first housing piece 120″, the retainer 600 is installed to further retain the sealing apparatuses 500′. The retainer 600 is shown adjacent the first housing piece 120″ at
The second housing piece 140″ may now be installed onto the first housing piece 120″. Chamfers 162a and 162b may be included on the second housing piece 140″ to facilitate aligning the second housing piece 140″ with the first housing piece 120″. As depicted, the chamfer 162a and the chamfer 162b are included on the sealing channel 154. The sealing channel 154 may capture the flange 126″ of the first housing piece 120″ when the second housing piece 140″ is installed on the first housing piece 120″, as illustrated at
In the preceding examples, the sealant material 570 was separated into the sealant material 570a and the sealant material 570b. In certain embodiments, the base wall 520 may be interrupted such that the sealant material 570a and the sealant material 570b may be in fluid communication with each other.
According to the principles of the present disclosure, the embodiment of the sealing apparatus 500″ is illustrated at
The above specification, examples, and data provide a complete description of the manufacture and use of the composition of certain inventive aspects of the present disclosure. It will be appreciated that the depicted and described embodiments are provided as examples of how the broad inventive aspects disclosed herein can be practiced, and that the broad inventive aspects can be incorporated into further embodiments other than those specifically shown and described.
Allen, Barry Wayne, Mullaney, Julian S.
Patent | Priority | Assignee | Title |
11149852, | Jul 04 2018 | Pure Vista Ltd. | Sealing device, system and method |
11781680, | Apr 19 2021 | Pipe trim assembly | |
11800027, | Mar 12 2021 | Ricoh Company, Ltd. | Housing, optical scanner, and image forming apparatus |
Patent | Priority | Assignee | Title |
2722043, | |||
3020260, | |||
3555663, | |||
4298204, | Jan 21 1980 | Black & Decker Inc. | Seal |
4369284, | Mar 17 1977 | ALLIED ELASTOMERICS INCORPORATED | Thermoplastic elastomer gelatinous compositions |
4634207, | Oct 12 1982 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Apparatus and method for protection of a substrate |
4680233, | May 02 1985 | Dow Corning Corporation | Sealing material |
4716183, | Nov 22 1985 | Raychem Corp.; RAYCHEM CORPORATION, 300 CONSTITUTION DRIVE, MENLO PARK, CA 94025, A CORP OF CA | Styrene-diene block copolymer compositions |
4777063, | May 02 1985 | Raychem Corporation | Curable organopolysiloxane composition |
4830182, | Dec 27 1986 | Canon Kabushiki Kaisha | Reticle cassette |
4852646, | Jun 16 1987 | Dow Corning Corporation | Thermally conductive gel materials |
4942270, | Jul 13 1987 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Cable sealing apparatus comprising heat resistant gel compositions |
5079300, | Mar 01 1989 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Method of curing organpolysiloxane compositions and compositions and articles therefrom |
5140746, | Oct 12 1982 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Method and device for making electrical connector |
5177143, | Aug 31 1984 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Method of making heat stable polymeric gelloid composition |
5357057, | Oct 12 1982 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Protected electrical connector |
5359654, | May 12 1992 | TYCO ELECTRONICS CORPORATION, A CORPORATION OF PENNSYLVANIA | Telecommunications network interface assembly |
5507062, | Mar 24 1995 | Spartan Tool Div. of Pettibone Corp. | Sealing structure on a mechanism for advancing a rotating cylindrical member |
6494464, | Apr 20 2000 | Dow Corning Corporation | Gel sealant enclosure with visual seal indication |
6672911, | Sep 15 2000 | AEES INC | Electrical terminal socket assembly including 90 angled and sealed connectors |
7603018, | Jan 16 2007 | CommScope EMEA Limited; CommScope Technologies LLC | Cable enclosure assemblies and methods for using the same |
20060204393, | |||
20070200301, | |||
20110266752, | |||
20110272895, | |||
JP2011190892, | |||
WO9623007, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 09 2013 | CommScope Technologies LLC | (assignment on the face of the patent) | / | |||
Dec 05 2014 | ALLEN, BARRY WAYNE | Tyco Electronics Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 034930 | /0222 | |
Dec 08 2014 | MULLANEY, JULIAN S | Tyco Electronics Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 034930 | /0222 | |
Aug 24 2015 | Tyco Electronics Corporation | ADC Telecommunications, Inc | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 036907 | /0571 | |
Aug 25 2015 | ADC Telecommunications, Inc | TYCO ELECTRONICS SERVICES GmbH | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 036908 | /0443 | |
Aug 25 2015 | TE Connectivity Solutions GmbH | TYCO ELECTRONICS SERVICES GmbH | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 036908 | /0443 | |
Aug 28 2015 | CommScope EMEA Limited | CommScope Technologies LLC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 037012 | /0001 | |
Aug 28 2015 | TYCO ELECTRONICS SERVICES GmbH | CommScope EMEA Limited | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 036956 | /0001 | |
Dec 20 2015 | CommScope Technologies LLC | JPMORGAN CHASE BANK, N A , AS COLLATERAL AGENT | PATENT SECURITY AGREEMENT TERM | 037513 | /0709 | |
Dec 20 2015 | CommScope Technologies LLC | JPMORGAN CHASE BANK, N A , AS COLLATERAL AGENT | PATENT SECURITY AGREEMENT ABL | 037514 | /0196 | |
Apr 04 2019 | JPMORGAN CHASE BANK, N A | REDWOOD SYSTEMS, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 048840 | /0001 | |
Apr 04 2019 | JPMORGAN CHASE BANK, N A | Allen Telecom LLC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 048840 | /0001 | |
Apr 04 2019 | JPMORGAN CHASE BANK, N A | Andrew LLC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 048840 | /0001 | |
Apr 04 2019 | JPMORGAN CHASE BANK, N A | COMMSCOPE, INC OF NORTH CAROLINA | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 048840 | /0001 | |
Apr 04 2019 | JPMORGAN CHASE BANK, N A | CommScope Technologies LLC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 048840 | /0001 | |
Apr 04 2019 | CommScope Technologies LLC | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 | |
Apr 04 2019 | COMMSCOPE, INC OF NORTH CAROLINA | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 | |
Apr 04 2019 | CommScope Technologies LLC | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | RUCKUS WIRELESS, INC | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 | |
Apr 04 2019 | ARRIS ENTERPRISES LLC | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | ARRIS TECHNOLOGY, INC | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | RUCKUS WIRELESS, INC | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | ARRIS SOLUTIONS, INC | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | CommScope Technologies LLC | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT | PATENT SECURITY AGREEMENT | 049892 | /0051 | |
Apr 04 2019 | ARRIS ENTERPRISES LLC | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 | |
Apr 04 2019 | COMMSCOPE, INC OF NORTH CAROLINA | JPMORGAN CHASE BANK, N A | ABL SECURITY AGREEMENT | 049892 | /0396 | |
Apr 04 2019 | ARRIS SOLUTIONS, INC | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 | |
Apr 04 2019 | ARRIS TECHNOLOGY, INC | JPMORGAN CHASE BANK, N A | TERM LOAN SECURITY AGREEMENT | 049905 | /0504 |
Date | Maintenance Fee Events |
Jan 06 2020 | REM: Maintenance Fee Reminder Mailed. |
Jun 22 2020 | EXP: Patent Expired for Failure to Pay Maintenance Fees. |
Date | Maintenance Schedule |
May 17 2019 | 4 years fee payment window open |
Nov 17 2019 | 6 months grace period start (w surcharge) |
May 17 2020 | patent expiry (for year 4) |
May 17 2022 | 2 years to revive unintentionally abandoned end. (for year 4) |
May 17 2023 | 8 years fee payment window open |
Nov 17 2023 | 6 months grace period start (w surcharge) |
May 17 2024 | patent expiry (for year 8) |
May 17 2026 | 2 years to revive unintentionally abandoned end. (for year 8) |
May 17 2027 | 12 years fee payment window open |
Nov 17 2027 | 6 months grace period start (w surcharge) |
May 17 2028 | patent expiry (for year 12) |
May 17 2030 | 2 years to revive unintentionally abandoned end. (for year 12) |